Who this guide is for
- Homeowners feeling draughts away from windows
- People noticing cold air near outlets or wall junctions
- Anyone wanting to understand air movement in walls
- Owners preparing to brief a professional
Why walls and outlets can feel draughty
Air can move through gaps in the building's air barrier, at junctions between materials, and around penetrations such as outlets. Cold air felt at these points often reflects the wider air-tightness of the construction, not just a local gap.
- Gaps in the air barrier
- Junctions between materials
- Penetrations such as outlets
How it differs from window draughts
Window and door draughts usually come from seals and operable parts, which are more visible and accessible. Wall and outlet draughts often point to less obvious paths through the construction, which can be harder to trace.
- Window draughts: seals and openings
- Wall draughts: hidden air paths
- Often harder to locate
Outlets and electrical safety
Air felt at outlets is a common observation, but outlets are electrical components. Investigating or working around them is a job for a qualified electrician. Never treat an outlet draught as a simple DIY sealing task.
When to bring in a professional
Because the causes can be hidden and may touch electrics or the air barrier, professional investigation is the sensible route. An assessment, sometimes including air-tightness testing, can locate paths that are not obvious from inside.
- Have hidden draughts professionally investigated
- Keep outlet work with an electrician
- Consider an air-tightness assessment
Drafty walls and outlets checklist
- 1Note where draughts are felt away from windows
- 2Observe whether cold air is near outlets
- 3Understand draughts can follow hidden paths
- 4Avoid treating outlets as DIY sealing tasks
- 5List observations for a professional
- 6Keep outlet work with an electrician
- 7Consider an air-tightness assessment
- 8Confirm causes with a professional
Common mistakes to avoid
- Assuming all draughts come from windows
- Treating an outlet draught as a simple DIY fix
- Working around outlets without an electrician
- Sealing visible gaps while missing hidden paths
- Skipping professional investigation of the air barrier
When to involve a professional
- Electrics, insulation and air-sealing should be handled by qualified professionals
- Outlet draughts involve electrical components; keep that work with an electrician
- Causes vary by construction and location; this page gives no diagnosis
- Costs and timelines vary; this page gives no figures or steps
Frequently asked questions
Questions readers ask about this topic
Why does a wall feel draughty?
Air can move through gaps in the building's air barrier, at junctions between materials, and around penetrations. Cold air at these points often reflects the wider air-tightness of the construction rather than a single local gap.
Why do outlets feel cold?
Air can move around penetrations such as outlets. However, outlets are electrical components, so investigating or working around them is a job for a qualified electrician, not a DIY sealing task.
How is this different from window draughts?
Window and door draughts usually come from seals and openings, which are visible and accessible. Wall and outlet draughts often follow less obvious paths through the construction, which can be harder to trace.
Who should investigate?
A qualified professional. Because the causes can be hidden and may touch electrics or the air barrier, professional investigation, sometimes including an air-tightness assessment, is the sensible route to locating the paths.
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